RESUMEN
Background Acute appendicitis can occur at any age but is rare among people of extreme age; it is more common in teenagers and young adults. Traditionally diagnosis is made on clinical grounds. In recent times imaging techniques have been deployed to improve diagnosis and reduce negative appendicectomy rates. The aim of the study was to describe the common clinical features of acute appendicitis among our patients, highlight the role of medical imaging, and compare all these with the histological report of the excised appendix. Methods A 24-months retrospective review of all patients who underwent appendicectomy (July 1, 2019-June 30, 2021) for suspected acute appendicitis was performed. Medical records numbers of patients who had appendicectomies were retrieved from the operating room register. These numbers were used to access the hospital's electronic medical records database for the patients' records. These records were reviewed for biodata, clinical features, laboratory, medical imaging findings, and histological reports. Result In this hospital, 354 appendicectomies were performed. Only 336 had complete data set suitable for further review. There were more males (N=257; 76.5%) than females (N=79, 23.5%), yielding a male to female ratio of 4:1. There were also more Saudi citizens (n=266, 79.2%), with the predominant age group being 11-30 years. Abdominal pain was the predominant symptom (100%) and was localized to the right iliac region in 331 (98.7%) of patients. Other symptoms recorded were anorexia (n=247, 73.5%), vomiting (n=190, 56.5%), and nausea (n=93, 27.7%). Atypical symptoms included diarrhoea (n=27, 8%) and constipation (n=12, 3.6%). Acute appendicitis, complicated appendicitis, and no appendicitis were the reported histological disposition in 174 (51.8%), 124 (36.9%), and 38 (11.3%) cases respectively. Abdominal CT scan had a higher sensitivity (98.6% vs 70.5%), higher diagnostic odd ratio (2.5 vs 1.4) and a lower miss (false negative) rate (1.4% vs 29.5%) compared to ultrasonography. However, the CT scan, from this study, has a rather low specificity (3.4%) and high false positive rates (96.5%). Open (n=205; 61%) and laparoscopic (n=131;39%) approaches were used for the appendicectomies. In our study, 44 patients were diagnosed with the decision to operate based on clinical grounds; and of this, 42 (95.4%; n=44) had confirmatory histology reports of appendicitis. Also, 38 patients had negative appendicectomy; giving a negative appendicectomy rate of 11.3%. This high rate may be due to the lower specificity and high false positive rate observed in this study. The post-operative complication rate was 21.4%, and this was solely due to surgical site infection, and this was more common with the open approach (p=0.001). Conclusion Suspected acute appendicitis was the sole indication for our appendicectomies. A computerized tomography scan was a more reliable diagnostic tool than ultrasonography. Despite the fact that acute appendicitis is majorly a clinical diagnosis, and good clinical acumen is an excellent skill in the management of patients, we observed an overreliance on medical imaging for diagnosis. Open appendicectomies were more common, and surgical site infection was the sole complication of surgery. There was a relatively high negative appendicectomy rate for an image-assisted diagnosis.
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BACKGROUND: Screening of blood products is considered a mandatory protocol implemented in health care facilities in order to reduce the onset of transfusion-transmitted infections (TTIs). This study was aimed to determine the sero-prevalence of ABO and Rh blood groups and their associated TTIs among blood donors in the Central Region of Saudi Arabia. METHODS: This was retrospective study performed on the blood donors' records from March 2017 to December 2018 at Buraidah Central Hospital Blood Bank. Study was conducted on a total of 4590 blood donors. ABO and Rh typing was performed.The blood samples were also screened serologically for hepatitis B surface antigen (HBsAg), anti-hepatitis B core total antibodies (anti-HBc total), hepatitis C virus (HCV), human immunodeficiency viruses (HIV), human T-lymphotrophic virus-1 (HTLV-1) and veneral disease research laboratory test(VDRL) for syphilis. RESULTS: Out of 4590 blood donors, O positive blood group was found to be highest (42%), followed by A positive (23.4%), B positive (20.9%), O negative (5.45%), AB positive (3.4%), A negative (2.8%), B negative (2.1%) and AB negative (0.5%). Moreover, total number of Rh-negative donors was significantly lowered as compared with Rh-positive. Seroreactive tests were found to be positive in only 1.002% of all studied donors and mainly found in male donors. Among TTI, anti-HBc total was the highest (0.784%), followed by HBsAg, HCV, VDRL and TPHA. Whereas all tested donors were found to be negative for HIV infections. CONCLUSIONS: The information collected for the frequency of ABO blood phenotypic groups has a vital significance in establishing a simple blood group database. This study clearly determined significantly lower rate of seropositive TTIs among the studied blood donors but still steps are needed to improve the knowledge and to prevent the seropositive occurrence of TTIs.